My 2009 SF LTD seems to have a radio display issue. Or, I am just losing more of my eyesight. It appears to me the display has "lost" its brightness in daylight hours. If I am driving, I can no longer see what station I am listening to, or what is being played (XM) as the backlight seems to have disappeared. I just had the radio replaced and the issue remains. Is it my poor eyesight, or could there be an electrical problem? I thought it might be a fuse problem or a backlight in the radio. Service representative does not think it's a backlight issue. Any others experience this? Really, the question is, can you all see the radio display throughout the daylight hours, at all times? I have no problems reading the climate control panel, clock, or odometer. Any and all help/response is appreciated.